/*
 * jQuery @VERSION - New Wave Javascript
 *
 * Copyright (c) 2008 John Resig (jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * $Date$
 * $Rev$
 */

// Map over jQuery in case of overwrite
var _jQuery = window.jQuery,
    // Map over the $ in case of overwrite
    _$ = window.$;

var jQuery = window.jQuery = window.$ = function(selector, context) {
    // The jQuery object is actually just the init constructor 'enhanced'
    return new jQuery.fn.init(selector, context);
};

// A simple way to check for HTML strings or ID strings
// (both of which we optimize for)
var quickExpr = /^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/,

    // Is it a simple selector
    isSimple = /^.[^:#\[\.]*$/,

    // Will speed up references to undefined, and allows munging its name.
    undefined;

jQuery.fn = jQuery.prototype = {
    init: function(selector, context) {
        // Make sure that a selection was provided
        selector = selector || document;

        // Handle $(DOMElement)
        if (selector.nodeType) {
            this[0] = selector;
            this.length = 1;
            return this;
        }
        // Handle HTML strings
        if (typeof selector == "string") {
            // Are we dealing with HTML string or an ID?
            var match = quickExpr.exec(selector);

            // Verify a match, and that no context was specified for #id
            if (match && (match[1] || !context)) {

                // HANDLE: $(html) -> $(array)
                if (match[1])
                    selector = jQuery.clean([match[1]], context);

                // HANDLE: $("#id")
                else {
                    var elem = document.getElementById(match[3]);

                    // Make sure an element was located
                    if (elem) {
                        // Handle the case where IE and Opera return items
                        // by name instead of ID
                        if (elem.id != match[3])
                            return jQuery().find(selector);

                        // Otherwise, we inject the element directly into the jQuery object
                        return jQuery(elem);
                    }
                    selector = [];
                }

                // HANDLE: $(expr, [context])
                // (which is just equivalent to: $(content).find(expr)
            } else
                return jQuery(context).find(selector);

            // HANDLE: $(function)
            // Shortcut for document ready
        } else if (jQuery.isFunction(selector))
            return jQuery(document)[jQuery.fn.ready ? "ready" : "load"](selector);

        return this.setArray(jQuery.makeArray(selector));
    },

    // The current version of jQuery being used
    jquery: "@VERSION",

    // The number of elements contained in the matched element set
    size: function() {
        return this.length;
    },

    // The number of elements contained in the matched element set
    length: 0,

    // Get the Nth element in the matched element set OR
    // Get the whole matched element set as a clean array
    get: function(num) {
        return num == undefined ?

            // Return a 'clean' array
            jQuery.makeArray(this) :

            // Return just the object
            this[num];
    },

    // Take an array of elements and push it onto the stack
    // (returning the new matched element set)
    pushStack: function(elems) {
        // Build a new jQuery matched element set
        var ret = jQuery(elems);

        // Add the old object onto the stack (as a reference)
        ret.prevObject = this;

        // Return the newly-formed element set
        return ret;
    },

    // Force the current matched set of elements to become
    // the specified array of elements (destroying the stack in the process)
    // You should use pushStack() in order to do this, but maintain the stack
    setArray: function(elems) {
        // Resetting the length to 0, then using the native Array push
        // is a super-fast way to populate an object with array-like properties
        this.length = 0;
        Array.prototype.push.apply(this, elems);

        return this;
    },

    // Execute a callback for every element in the matched set.
    // (You can seed the arguments with an array of args, but this is
    // only used internally.)
    each: function(callback, args) {
        return jQuery.each(this, callback, args);
    },

    // Determine the position of an element within
    // the matched set of elements
    index: function(elem) {
        var ret = -1;

        // Locate the position of the desired element
        return jQuery.inArray(
            // If it receives a jQuery object, the first element is used
            elem && elem.jquery ? elem[0] : elem, this);
    },

    attr: function(name, value, type) {
        var options = name;

        // Look for the case where we're accessing a style value
        if (name.constructor == String)
            if (value === undefined)
                return this[0] && jQuery[type || "attr"](this[0], name);

            else {
                options = {};
                options[name] = value;
            }

            // Check to see if we're setting style values
        return this.each(function(i) {
            // Set all the styles
            for (name in options)
                jQuery.attr(
                    type ?
                    this.style :
                    this,
                    name, jQuery.prop(this, options[name], type, i, name)
                );
        });
    },

    css: function(key, value) {
        // ignore negative width and height values
        if ((key == 'width' || key == 'height') && parseFloat(value) < 0)
            value = undefined;
        return this.attr(key, value, "curCSS");
    },

    text: function(text) {
        if (typeof text != "object" && text != null)
            return this.empty().append((this[0] && this[0].ownerDocument || document).createTextNode(text));

        var ret = "";

        jQuery.each(text || this, function() {
            jQuery.each(this.childNodes, function() {
                if (this.nodeType != 8)
                    ret += this.nodeType != 1 ?
                    this.nodeValue :
                    jQuery.fn.text([this]);
            });
        });

        return ret;
    },

    wrapAll: function(html) {
        if (this[0])
        // The elements to wrap the target around
            jQuery(html, this[0].ownerDocument)
            .clone()
            .insertBefore(this[0])
            .map(function() {
                var elem = this;

                while (elem.firstChild)
                    elem = elem.firstChild;

                return elem;
            })
            .append(this);

        return this;
    },

    wrapInner: function(html) {
        return this.each(function() {
            jQuery(this).contents().wrapAll(html);
        });
    },

    wrap: function(html) {
        return this.each(function() {
            jQuery(this).wrapAll(html);
        });
    },

    append: function() {
        return this.domManip(arguments, true, false, function(elem) {
            if (this.nodeType == 1)
                this.appendChild(elem);
        });
    },

    prepend: function() {
        return this.domManip(arguments, true, true, function(elem) {
            if (this.nodeType == 1)
                this.insertBefore(elem, this.firstChild);
        });
    },

    before: function() {
        return this.domManip(arguments, false, false, function(elem) {
            this.parentNode.insertBefore(elem, this);
        });
    },

    after: function() {
        return this.domManip(arguments, false, true, function(elem) {
            this.parentNode.insertBefore(elem, this.nextSibling);
        });
    },

    end: function() {
        return this.prevObject || jQuery([]);
    },

    find: function(selector) {
        var elems = jQuery.map(this, function(elem) {
            return jQuery.find(selector, elem);
        });

        return this.pushStack(/[^+>] [^+>]/.test(selector) || selector.indexOf("..") > -1 ?
            jQuery.unique(elems) :
            elems);
    },

    clone: function(events) {
        // Do the clone
        var ret = this.map(function() {
            if (jQuery.browser.msie && !jQuery.isXMLDoc(this)) {
                // IE copies events bound via attachEvent when
                // using cloneNode. Calling detachEvent on the
                // clone will also remove the events from the orignal
                // In order to get around this, we use innerHTML.
                // Unfortunately, this means some modifications to
                // attributes in IE that are actually only stored
                // as properties will not be copied (such as the
                // the name attribute on an input).
                var clone = this.cloneNode(true),
                    container = document.createElement("div");
                container.appendChild(clone);
                return jQuery.clean([container.innerHTML])[0];
            } else
                return this.cloneNode(true);
        });

        // Need to set the expando to null on the cloned set if it exists
        // removeData doesn't work here, IE removes it from the original as well
        // this is primarily for IE but the data expando shouldn't be copied over in any browser
        var clone = ret.find("*").andSelf().each(function() {
            if (this[expando] != undefined)
                this[expando] = null;
        });

        // Copy the events from the original to the clone
        if (events === true)
            this.find("*").andSelf().each(function(i) {
                if (this.nodeType == 3)
                    return;
                var events = jQuery.data(this, "events");

                for (var type in events)
                    for (var handler in events[type])
                        jQuery.event.add(clone[i], type, events[type][handler], events[type][handler].data);
            });

        // Return the cloned set
        return ret;
    },

    filter: function(selector) {
        return this.pushStack(
            jQuery.isFunction(selector) &&
            jQuery.grep(this, function(elem, i) {
                return selector.call(elem, i);
            }) ||

            jQuery.multiFilter(selector, this));
    },

    not: function(selector) {
        if (selector.constructor == String)
        // test special case where just one selector is passed in
            if (isSimple.test(selector))
                return this.pushStack(jQuery.multiFilter(selector, this, true));
            else
                selector = jQuery.multiFilter(selector, this);

        var isArrayLike = selector.length && selector[selector.length - 1] !== undefined && !selector.nodeType;
        return this.filter(function() {
            return isArrayLike ? jQuery.inArray(this, selector) < 0 : this != selector;
        });
    },

    add: function(selector) {
        return this.pushStack(jQuery.unique(jQuery.merge(
            this.get(),
            typeof selector == 'string' ?
            jQuery(selector) :
            jQuery.makeArray(selector)
        )));
    },

    is: function(selector) {
        return !!selector && jQuery.multiFilter(selector, this).length > 0;
    },

    hasClass: function(selector) {
        return this.is("." + selector);
    },

    val: function(value) {
        if (value == undefined) {

            if (this.length) {
                var elem = this[0];

                // We need to handle select boxes special
                if (jQuery.nodeName(elem, "select")) {
                    var index = elem.selectedIndex,
                        values = [],
                        options = elem.options,
                        one = elem.type == "select-one";

                    // Nothing was selected
                    if (index < 0)
                        return null;

                    // Loop through all the selected options
                    for (var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++) {
                        var option = options[i];

                        if (option.selected) {
                            // Get the specifc value for the option
                            value = jQuery.browser.msie && !option.attributes.value.specified ? option.text : option.value;

                            // We don't need an array for one selects
                            if (one)
                                return value;

                            // Multi-Selects return an array
                            values.push(value);
                        }
                    }

                    return values;

                    // Everything else, we just grab the value
                } else
                    return (this[0].value || "").replace(/\r/g, "");

            }

            return undefined;
        }

        if (value.constructor == Number)
            value += '';

        return this.each(function() {
            if (this.nodeType != 1)
                return;

            if (value.constructor == Array && /radio|checkbox/.test(this.type))
                this.checked = (jQuery.inArray(this.value, value) >= 0 ||
                    jQuery.inArray(this.name, value) >= 0);

            else if (jQuery.nodeName(this, "select")) {
                var values = jQuery.makeArray(value);

                jQuery("option", this).each(function() {
                    this.selected = (jQuery.inArray(this.value, values) >= 0 ||
                        jQuery.inArray(this.text, values) >= 0);
                });

                if (!values.length)
                    this.selectedIndex = -1;

            } else
                this.value = value;
        });
    },

    html: function(value) {
        return value == undefined ?
            (this[0] ?
                this[0].innerHTML :
                null) :
            this.empty().append(value);
    },

    replaceWith: function(value) {
        return this.after(value).remove();
    },

    eq: function(i) {
        return this.slice(i, i + 1);
    },

    slice: function() {
        return this.pushStack(Array.prototype.slice.apply(this, arguments));
    },

    map: function(callback) {
        return this.pushStack(jQuery.map(this, function(elem, i) {
            return callback.call(elem, i, elem);
        }));
    },

    andSelf: function() {
        return this.add(this.prevObject);
    },

    data: function(key, value) {
        var parts = key.split(".");
        parts[1] = parts[1] ? "." + parts[1] : "";

        if (value === undefined) {
            var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);

            if (data === undefined && this.length)
                data = jQuery.data(this[0], key);

            return data === undefined && parts[1] ?
                this.data(parts[0]) :
                data;
        } else
            return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function() {
                jQuery.data(this, key, value);
            });
    },

    removeData: function(key) {
        return this.each(function() {
            jQuery.removeData(this, key);
        });
    },

    domManip: function(args, table, reverse, callback) {
        var clone = this.length > 1,
            elems;

        return this.each(function() {
            if (!elems) {
                elems = jQuery.clean(args, this.ownerDocument);

                if (reverse)
                    elems.reverse();
            }

            var obj = this;

            if (table && jQuery.nodeName(this, "table") && jQuery.nodeName(elems[0], "tr"))
                obj = this.getElementsByTagName("tbody")[0] || this.appendChild(this.ownerDocument.createElement("tbody"));

            var scripts = jQuery([]);

            jQuery.each(elems, function() {
                var elem = clone ?
                    jQuery(this).clone(true)[0] :
                    this;

                // execute all scripts after the elements have been injected
                if (jQuery.nodeName(elem, "script"))
                    scripts = scripts.add(elem);
                else {
                    // Remove any inner scripts for later evaluation
                    if (elem.nodeType == 1)
                        scripts = scripts.add(jQuery("script", elem).remove());

                    // Inject the elements into the document
                    callback.call(obj, elem);
                }
            });

            scripts.each(evalScript);
        });
    }
};

// Give the init function the jQuery prototype for later instantiation
jQuery.fn.init.prototype = jQuery.fn;

function evalScript(i, elem) {
    if (elem.src)
        jQuery.ajax({
            url: elem.src,
            async: false,
            dataType: "script"
        });

    else
        jQuery.globalEval(elem.text || elem.textContent || elem.innerHTML || "");

    if (elem.parentNode)
        elem.parentNode.removeChild(elem);
}

function now() {
    return +new Date;
}

jQuery.extend = jQuery.fn.extend = function() {
    // copy reference to target object
    var target = arguments[0] || {},
        i = 1,
        length = arguments.length,
        deep = false,
        options;

    // Handle a deep copy situation
    if (target.constructor == Boolean) {
        deep = target;
        target = arguments[1] || {};
        // skip the boolean and the target
        i = 2;
    }

    // Handle case when target is a string or something (possible in deep copy)
    if (typeof target != "object" && typeof target != "function")
        target = {};

    // extend jQuery itself if only one argument is passed
    if (length == i) {
        target = this;
        --i;
    }

    for (; i < length; i++)
    // Only deal with non-null/undefined values
        if ((options = arguments[i]) != null)
        // Extend the base object
            for (var name in options) {
            var src = target[name],
                copy = options[name];

            // Prevent never-ending loop
            if (target === copy)
                continue;

            // Recurse if we're merging object values
            if (deep && copy && typeof copy == "object" && !copy.nodeType)
                target[name] = jQuery.extend(deep,
                    // Never move original objects, clone them
                    src || (copy.length != null ? [] : {}), copy);

            // Don't bring in undefined values
            else if (copy !== undefined)
                target[name] = copy;

        }

        // Return the modified object
    return target;
};

var expando = "jQuery" + now(),
    uuid = 0,
    windowData = {},
    // exclude the following css properties to add px
    exclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
    // cache defaultView
    defaultView = document.defaultView || {};

jQuery.extend({
    noConflict: function(deep) {
        window.$ = _$;

        if (deep)
            window.jQuery = _jQuery;

        return jQuery;
    },

    // See test/unit/core.js for details concerning this function.
    isFunction: function(fn) {
        return !!fn && typeof fn != "string" && !fn.nodeName &&
            fn.constructor != Array && /^[\s[]?function/.test(fn + "");
    },

    // check if an element is in a (or is an) XML document
    isXMLDoc: function(elem) {
        return elem.documentElement && !elem.body ||
            elem.tagName && elem.ownerDocument && !elem.ownerDocument.body;
    },

    // Evalulates a script in a global context
    globalEval: function(data) {
        data = jQuery.trim(data);

        if (data) {
            // Inspired by code by Andrea Giammarchi
            // http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
            var head = document.getElementsByTagName("head")[0] || document.documentElement,
                script = document.createElement("script");

            script.type = "text/javascript";
            if (jQuery.browser.msie)
                script.text = data;
            else
                script.appendChild(document.createTextNode(data));

            // Use insertBefore instead of appendChild  to circumvent an IE6 bug.
            // This arises when a base node is used (#2709).
            head.insertBefore(script, head.firstChild);
            head.removeChild(script);
        }
    },

    nodeName: function(elem, name) {
        return elem.nodeName && elem.nodeName.toUpperCase() == name.toUpperCase();
    },

    cache: {},

    data: function(elem, name, data) {
        elem = elem == window ?
            windowData :
            elem;

        var id = elem[expando];

        // Compute a unique ID for the element
        if (!id)
            id = elem[expando] = ++uuid;

        // Only generate the data cache if we're
        // trying to access or manipulate it
        if (name && !jQuery.cache[id])
            jQuery.cache[id] = {};

        // Prevent overriding the named cache with undefined values
        if (data !== undefined)
            jQuery.cache[id][name] = data;

        // Return the named cache data, or the ID for the element
        return name ?
            jQuery.cache[id][name] :
            id;
    },

    removeData: function(elem, name) {
        elem = elem == window ?
            windowData :
            elem;

        var id = elem[expando];

        // If we want to remove a specific section of the element's data
        if (name) {
            if (jQuery.cache[id]) {
                // Remove the section of cache data
                delete jQuery.cache[id][name];

                // If we've removed all the data, remove the element's cache
                name = "";

                for (name in jQuery.cache[id])
                    break;

                if (!name)
                    jQuery.removeData(elem);
            }

            // Otherwise, we want to remove all of the element's data
        } else {
            // Clean up the element expando
            try {
                delete elem[expando];
            } catch (e) {
                // IE has trouble directly removing the expando
                // but it's ok with using removeAttribute
                if (elem.removeAttribute)
                    elem.removeAttribute(expando);
            }

            // Completely remove the data cache
            delete jQuery.cache[id];
        }
    },

    // args is for internal usage only
    each: function(object, callback, args) {
        var name, i = 0,
            length = object.length;

        if (args) {
            if (length == undefined) {
                for (name in object)
                    if (callback.apply(object[name], args) === false)
                        break;
            } else
                for (; i < length;)
                    if (callback.apply(object[i++], args) === false)
                        break;

                    // A special, fast, case for the most common use of each
        } else {
            if (length == undefined) {
                for (name in object)
                    if (callback.call(object[name], name, object[name]) === false)
                        break;
            } else
                for (var value = object[0]; i < length && callback.call(value, i, value) !== false; value = object[++i]) {}
        }

        return object;
    },

    prop: function(elem, value, type, i, name) {
        // Handle executable functions
        if (jQuery.isFunction(value))
            value = value.call(elem, i);

        // Handle passing in a number to a CSS property
        return value && value.constructor == Number && type == "curCSS" && !exclude.test(name) ?
            value + "px" :
            value;
    },

    className: {
        // internal only, use addClass("class")
        add: function(elem, classNames) {
            jQuery.each((classNames || "").split(/\s+/), function(i, className) {
                if (elem.nodeType == 1 && !jQuery.className.has(elem.className, className))
                    elem.className += (elem.className ? " " : "") + className;
            });
        },

        // internal only, use removeClass("class")
        remove: function(elem, classNames) {
            if (elem.nodeType == 1)
                elem.className = classNames != undefined ?
                jQuery.grep(elem.className.split(/\s+/), function(className) {
                    return !jQuery.className.has(classNames, className);
                }).join(" ") :
                "";
        },

        // internal only, use hasClass("class")
        has: function(elem, className) {
            return jQuery.inArray(className, (elem.className || elem).toString().split(/\s+/)) > -1;
        }
    },

    // A method for quickly swapping in/out CSS properties to get correct calculations
    swap: function(elem, options, callback) {
        var old = {};
        // Remember the old values, and insert the new ones
        for (var name in options) {
            old[name] = elem.style[name];
            elem.style[name] = options[name];
        }

        callback.call(elem);

        // Revert the old values
        for (var name in options)
            elem.style[name] = old[name];
    },

    css: function(elem, name, force) {
        if (name == "width" || name == "height") {
            var val, props = { position: "absolute", visibility: "hidden", display: "block" },
                which = name == "width" ? ["Left", "Right"] : ["Top", "Bottom"];

            function getWH() {
                val = name == "width" ? elem.offsetWidth : elem.offsetHeight;
                var padding = 0,
                    border = 0;
                jQuery.each(which, function() {
                    padding += parseFloat(jQuery.curCSS(elem, "padding" + this, true)) || 0;
                    border += parseFloat(jQuery.curCSS(elem, "border" + this + "Width", true)) || 0;
                });
                val -= Math.round(padding + border);
            }

            if (jQuery(elem).is(":visible"))
                getWH();
            else
                jQuery.swap(elem, props, getWH);

            return Math.max(0, val);
        }

        return jQuery.curCSS(elem, name, force);
    },

    curCSS: function(elem, name, force) {
        var ret, style = elem.style;

        // A helper method for determining if an element's values are broken
        function color(elem) {
            if (!jQuery.browser.safari)
                return false;

            // defaultView is cached
            var ret = defaultView.getComputedStyle(elem, null);
            return !ret || ret.getPropertyValue("color") == "";
        }

        // We need to handle opacity special in IE
        if (name == "opacity" && jQuery.browser.msie) {
            ret = jQuery.attr(style, "opacity");

            return ret == "" ?
                "1" :
                ret;
        }
        // Opera sometimes will give the wrong display answer, this fixes it, see #2037
        if (jQuery.browser.opera && name == "display") {
            var save = style.outline;
            style.outline = "0 solid black";
            style.outline = save;
        }

        // Make sure we're using the right name for getting the float value
        if (name.match(/float/i))
            name = styleFloat;

        if (!force && style && style[name])
            ret = style[name];

        else if (defaultView.getComputedStyle) {

            // Only "float" is needed here
            if (name.match(/float/i))
                name = "float";

            name = name.replace(/([A-Z])/g, "-$1").toLowerCase();

            var computedStyle = defaultView.getComputedStyle(elem, null);

            if (computedStyle && !color(elem))
                ret = computedStyle.getPropertyValue(name);

            // If the element isn't reporting its values properly in Safari
            // then some display: none elements are involved
            else {
                var swap = [],
                    stack = [],
                    a = elem,
                    i = 0;

                // Locate all of the parent display: none elements
                for (; a && color(a); a = a.parentNode)
                    stack.unshift(a);

                // Go through and make them visible, but in reverse
                // (It would be better if we knew the exact display type that they had)
                for (; i < stack.length; i++)
                    if (color(stack[i])) {
                        swap[i] = stack[i].style.display;
                        stack[i].style.display = "block";
                    }

                    // Since we flip the display style, we have to handle that
                    // one special, otherwise get the value
                ret = name == "display" && swap[stack.length - 1] != null ?
                    "none" :
                    (computedStyle && computedStyle.getPropertyValue(name)) || "";

                // Finally, revert the display styles back
                for (i = 0; i < swap.length; i++)
                    if (swap[i] != null)
                        stack[i].style.display = swap[i];
            }

            // We should always get a number back from opacity
            if (name == "opacity" && ret == "")
                ret = "1";

        } else if (elem.currentStyle) {
            var camelCase = name.replace(/\-(\w)/g, function(all, letter) {
                return letter.toUpperCase();
            });

            ret = elem.currentStyle[name] || elem.currentStyle[camelCase];

            // From the awesome hack by Dean Edwards
            // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291

            // If we're not dealing with a regular pixel number
            // but a number that has a weird ending, we need to convert it to pixels
            if (!/^\d+(px)?$/i.test(ret) && /^\d/.test(ret)) {
                // Remember the original values
                var left = style.left,
                    rsLeft = elem.runtimeStyle.left;

                // Put in the new values to get a computed value out
                elem.runtimeStyle.left = elem.currentStyle.left;
                style.left = ret || 0;
                ret = style.pixelLeft + "px";

                // Revert the changed values
                style.left = left;
                elem.runtimeStyle.left = rsLeft;
            }
        }

        return ret;
    },

    clean: function(elems, context) {
        var ret = [];
        context = context || document;
        // !context.createElement fails in IE with an error but returns typeof 'object'
        if (typeof context.createElement == 'undefined')
            context = context.ownerDocument || context[0] && context[0].ownerDocument || document;

        jQuery.each(elems, function(i, elem) {
            if (!elem)
                return;

            if (elem.constructor == Number)
                elem += '';

            // Convert html string into DOM nodes
            if (typeof elem == "string") {
                // Fix "XHTML"-style tags in all browsers
                elem = elem.replace(/(<(\w+)[^>]*?)\/>/g, function(all, front, tag) {
                    return tag.match(/^(abbr|br|col|img|input|link|meta|param|hr|area|embed)$/i) ?
                        all :
                        front + "></" + tag + ">";
                });

                // Trim whitespace, otherwise indexOf won't work as expected
                var tags = jQuery.trim(elem).toLowerCase(),
                    div = context.createElement("div");

                var wrap =
                    // option or optgroup
                    !tags.indexOf("<opt") && [1, "<select multiple='multiple'>", "</select>"] ||

                    !tags.indexOf("<leg") && [1, "<fieldset>", "</fieldset>"] ||

                    tags.match(/^<(thead|tbody|tfoot|colg|cap)/) && [1, "<table>", "</table>"] ||

                    !tags.indexOf("<tr") && [2, "<table><tbody>", "</tbody></table>"] ||

                    // <thead> matched above
                    (!tags.indexOf("<td") || !tags.indexOf("<th")) && [3, "<table><tbody><tr>", "</tr></tbody></table>"] ||

                    !tags.indexOf("<col") && [2, "<table><tbody></tbody><colgroup>", "</colgroup></table>"] ||

                    // IE can't serialize <link> and <script> tags normally
                    jQuery.browser.msie && [1, "div<div>", "</div>"] ||

                    [0, "", ""];

                // Go to html and back, then peel off extra wrappers
                div.innerHTML = wrap[1] + elem + wrap[2];

                // Move to the right depth
                while (wrap[0]--)
                    div = div.lastChild;

                // Remove IE's autoinserted <tbody> from table fragments
                if (jQuery.browser.msie) {

                    // String was a <table>, *may* have spurious <tbody>
                    var tbody = !tags.indexOf("<table") && tags.indexOf("<tbody") < 0 ?
                        div.firstChild && div.firstChild.childNodes :

                        // String was a bare <thead> or <tfoot>
                        wrap[1] == "<table>" && tags.indexOf("<tbody") < 0 ?
                        div.childNodes : [];

                    for (var j = tbody.length - 1; j >= 0; --j)
                        if (jQuery.nodeName(tbody[j], "tbody") && !tbody[j].childNodes.length)
                            tbody[j].parentNode.removeChild(tbody[j]);

                        // IE completely kills leading whitespace when innerHTML is used
                    if (/^\s/.test(elem))
                        div.insertBefore(context.createTextNode(elem.match(/^\s*/)[0]), div.firstChild);

                }

                elem = jQuery.makeArray(div.childNodes);
            }

            if (elem.length === 0 && (!jQuery.nodeName(elem, "form") && !jQuery.nodeName(elem, "select")))
                return;

            if (elem[0] == undefined || jQuery.nodeName(elem, "form") || elem.options)
                ret.push(elem);

            else
                ret = jQuery.merge(ret, elem);

        });

        return ret;
    },

    attr: function(elem, name, value) {
        // don't set attributes on text and comment nodes
        if (!elem || elem.nodeType == 3 || elem.nodeType == 8)
            return undefined;

        var notxml = !jQuery.isXMLDoc(elem),
            // Whether we are setting (or getting)
            set = value !== undefined,
            msie = jQuery.browser.msie;

        // Try to normalize/fix the name
        name = notxml && jQuery.props[name] || name;

        // Only do all the following if this is a node (faster for style)
        // IE elem.getAttribute passes even for style
        if (elem.tagName) {

            // These attributes require special treatment
            var special = /href|src|style/.test(name);

            // Safari mis-reports the default selected property of a hidden option
            // Accessing the parent's selectedIndex property fixes it
            if (name == "selected" && jQuery.browser.safari)
                elem.parentNode.selectedIndex;

            // If applicable, access the attribute via the DOM 0 way
            if (name in elem && notxml && !special) {
                if (set) {
                    // We can't allow the type property to be changed (since it causes problems in IE)
                    if (name == "type" && jQuery.nodeName(elem, "input") && elem.parentNode)
                        throw "type property can't be changed";

                    elem[name] = value;
                }

                // browsers index elements by id/name on forms, give priority to attributes.
                if (jQuery.nodeName(elem, "form") && elem.getAttributeNode(name))
                    return elem.getAttributeNode(name).nodeValue;

                return elem[name];
            }

            if (msie && notxml && name == "style")
                return jQuery.attr(elem.style, "cssText", value);

            if (set)
            // convert the value to a string (all browsers do this but IE) see #1070
                elem.setAttribute(name, "" + value);

            var attr = msie && notxml && special
                // Some attributes require a special call on IE
                ? elem.getAttribute(name, 2) : elem.getAttribute(name);

            // Non-existent attributes return null, we normalize to undefined
            return attr === null ? undefined : attr;
        }

        // elem is actually elem.style ... set the style

        // IE uses filters for opacity
        if (msie && name == "opacity") {
            if (set) {
                // IE has trouble with opacity if it does not have layout
                // Force it by setting the zoom level
                elem.zoom = 1;

                // Set the alpha filter to set the opacity
                elem.filter = (elem.filter || "").replace(/alpha\([^)]*\)/, "") +
                    (parseInt(value) + '' == "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
            }

            return elem.filter && elem.filter.indexOf("opacity=") >= 0 ?
                (parseFloat(elem.filter.match(/opacity=([^)]*)/)[1]) / 100) + '' :
                "";
        }

        name = name.replace(/-([a-z])/ig, function(all, letter) {
            return letter.toUpperCase();
        });

        if (set)
            elem[name] = value;

        return elem[name];
    },

    trim: function(text) {
        return (text || "").replace(/^\s+|\s+$/g, "");
    },

    makeArray: function(array) {
        var ret = [];

        if (array != null) {
            var i = array.length;
            //the window, strings and functions also have 'length'
            if (i == null || array.split || array.setInterval || array.call)
                ret[0] = array;
            else
                while (i)
                    ret[--i] = array[i];
        }

        return ret;
    },

    inArray: function(elem, array) {
        for (var i = 0, length = array.length; i < length; i++)
        // Use === because on IE, window == document
            if (array[i] === elem)
                return i;

        return -1;
    },

    merge: function(first, second) {
        // We have to loop this way because IE & Opera overwrite the length
        // expando of getElementsByTagName
        var i = 0,
            elem, pos = first.length;
        // Also, we need to make sure that the correct elements are being returned
        // (IE returns comment nodes in a '*' query)
        if (jQuery.browser.msie) {
            while (elem = second[i++])
                if (elem.nodeType != 8)
                    first[pos++] = elem;

        } else
            while (elem = second[i++])
                first[pos++] = elem;

        return first;
    },

    unique: function(array) {
        var ret = [],
            done = {};

        try {

            for (var i = 0, length = array.length; i < length; i++) {
                var id = jQuery.data(array[i]);

                if (!done[id]) {
                    done[id] = true;
                    ret.push(array[i]);
                }
            }

        } catch (e) {
            ret = array;
        }

        return ret;
    },

    grep: function(elems, callback, inv) {
        var ret = [];

        // Go through the array, only saving the items
        // that pass the validator function
        for (var i = 0, length = elems.length; i < length; i++)
            if (!inv != !callback(elems[i], i))
                ret.push(elems[i]);

        return ret;
    },

    map: function(elems, callback) {
        var ret = [];

        // Go through the array, translating each of the items to their
        // new value (or values).
        for (var i = 0, length = elems.length; i < length; i++) {
            var value = callback(elems[i], i);

            if (value != null)
                ret[ret.length] = value;
        }

        return ret.concat.apply([], ret);
    }
});

var userAgent = navigator.userAgent.toLowerCase();

// Figure out what browser is being used
jQuery.browser = {
    version: (userAgent.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1],
    safari: /webkit/.test(userAgent),
    opera: /opera/.test(userAgent),
    msie: /msie/.test(userAgent) && !/opera/.test(userAgent),
    mozilla: /mozilla/.test(userAgent) && !/(compatible|webkit)/.test(userAgent)
};

var styleFloat = jQuery.browser.msie ?
    "styleFloat" :
    "cssFloat";

jQuery.extend({
    // Check to see if the W3C box model is being used
    boxModel: !jQuery.browser.msie || document.compatMode == "CSS1Compat",

    props: {
        "for": "htmlFor",
        "class": "className",
        "float": styleFloat,
        cssFloat: styleFloat,
        styleFloat: styleFloat,
        readonly: "readOnly",
        maxlength: "maxLength",
        cellspacing: "cellSpacing"
    }
});

jQuery.each({
    parent: function(elem) {
        return elem.parentNode; },
    parents: function(elem) {
        return jQuery.dir(elem, "parentNode"); },
    next: function(elem) {
        return jQuery.nth(elem, 2, "nextSibling"); },
    prev: function(elem) {
        return jQuery.nth(elem, 2, "previousSibling"); },
    nextAll: function(elem) {
        return jQuery.dir(elem, "nextSibling"); },
    prevAll: function(elem) {
        return jQuery.dir(elem, "previousSibling"); },
    siblings: function(elem) {
        return jQuery.sibling(elem.parentNode.firstChild, elem); },
    children: function(elem) {
        return jQuery.sibling(elem.firstChild); },
    contents: function(elem) {
        return jQuery.nodeName(elem, "iframe") ? elem.contentDocument || elem.contentWindow.document : jQuery.makeArray(elem.childNodes); }
}, function(name, fn) {
    jQuery.fn[name] = function(selector) {
        var ret = jQuery.map(this, fn);

        if (selector && typeof selector == "string")
            ret = jQuery.multiFilter(selector, ret);

        return this.pushStack(jQuery.unique(ret));
    };
});

jQuery.each({
    appendTo: "append",
    prependTo: "prepend",
    insertBefore: "before",
    insertAfter: "after",
    replaceAll: "replaceWith"
}, function(name, original) {
    jQuery.fn[name] = function() {
        var args = arguments;

        return this.each(function() {
            for (var i = 0, length = args.length; i < length; i++)
                jQuery(args[i])[original](this);
        });
    };
});

jQuery.each({
    removeAttr: function(name) {
        jQuery.attr(this, name, "");
        if (this.nodeType == 1)
            this.removeAttribute(name);
    },

    addClass: function(classNames) {
        jQuery.className.add(this, classNames);
    },

    removeClass: function(classNames) {
        jQuery.className.remove(this, classNames);
    },

    toggleClass: function(classNames) {
        jQuery.className[jQuery.className.has(this, classNames) ? "remove" : "add"](this, classNames);
    },

    remove: function(selector) {
        if (!selector || jQuery.filter(selector, [this]).r.length) {
            // Prevent memory leaks
            jQuery("*", this).add(this).each(function() {
                jQuery.event.remove(this);
                jQuery.removeData(this);
            });
            if (this.parentNode)
                this.parentNode.removeChild(this);
        }
    },

    empty: function() {
        // Remove element nodes and prevent memory leaks
        jQuery(">*", this).remove();

        // Remove any remaining nodes
        while (this.firstChild)
            this.removeChild(this.firstChild);
    }
}, function(name, fn) {
    jQuery.fn[name] = function() {
        return this.each(fn, arguments);
    };
});

jQuery.each(["Height", "Width"], function(i, name) {
    var type = name.toLowerCase();

    jQuery.fn[type] = function(size) {
        // Get window width or height
        return this[0] == window ?
            // Opera reports document.body.client[Width/Height] properly in both quirks and standards
            jQuery.browser.opera && document.body["client" + name] ||

            // Safari reports inner[Width/Height] just fine (Mozilla and Opera include scroll bar widths)
            jQuery.browser.safari && window["inner" + name] ||

            // Everyone else use document.documentElement or document.body depending on Quirks vs Standards mode
            document.compatMode == "CSS1Compat" && document.documentElement["client" + name] || document.body["client" + name] :

            // Get document width or height
            this[0] == document ?
            // Either scroll[Width/Height] or offset[Width/Height], whichever is greater
            Math.max(
                Math.max(document.body["scroll" + name], document.documentElement["scroll" + name]),
                Math.max(document.body["offset" + name], document.documentElement["offset" + name])
            ) :

            // Get or set width or height on the element
            size == undefined ?
            // Get width or height on the element
            (this.length ? jQuery.css(this[0], type) : null) :

            // Set the width or height on the element (default to pixels if value is unitless)
            this.css(type, size.constructor == String ? size : size + "px");
    };
});

// Helper function used by the dimensions and offset modules
function num(elem, prop) {
    return elem[0] && parseInt(jQuery.curCSS(elem[0], prop, true), 10) || 0;
}
